Reel adjustment for side delivery rakes



Jan. 26, 1954 v. o. HAUSWIRTH REEL ADJUSTMENT FOR SIDE DELIVERY RAKES 2 Sheets-Sheet 1 Filed Jan. 11, 1952 INVENTOR.

Jan. 26, 1954 v. o. HAUSWIRTH REEL ADJUSTMENT FOR SIDE DELIVERY RAKES 2 Sheets-Sheet 2 Filed Jan. 11, 1952 INVENTOR. VfR/VO/V O HAUSW/PT/f Patented Jan. 26, 1954 REEL ADJUSTMENT FOR SIDE DELIVERY RAKES Application January 11, 1952, Serial No.

3 Claims.

This invention relates to side delivery rakes, and particularly to an improved mechanism for adjusting the pitch of the raking teeth of such rakes with respect to the ground.

Under certain raking conditions, it has been found desirable to provide an adjustment of the pitch or angular position of the raking teeth of the cylindroid type reel to the ground surface over which the teeth move to effect the raking action.

It is an object of this invention to provide a simple, economical and convenient mechanism for effecting such adjustment.

A particular object of this invention is to provi e rake tooth without leaving the seat of the tractor.

The specific nature of this invention, as Well as other objects and advantages thereof, will become apparent to those skilled in the art from the following detailed description, taken in conjunction with the attached sheets of drawings on which, by way of preferred example only, is illustrated one embodiment of this invention.

On the drawings:

Figure l is a plan view of a side delivery rake embodying the adjusting mechanism of this invention;

Figure 2 is an enlarged scale, partial rear elevational view of the rake of Figure 1;

Figure 3 is an enlarged scale, end view of the raking drum showing the tilt of the teeth obtainable;

Figure 2 is an enlarged scale partial plan View showing the raking drum crank axle; and

Figure 5 is an enlarged scale, elevational view of the locking elements of the manual adjusting linkage.

As shown on the drawings:

While the general construction of the side delivery rake to be herein described is substantially identical to the rake shown in the above referred to co-pending Richey application, it will be understood that the principles of this invention are equally applicable to any type of side delivery rake employing the well-known cylindroid type cf raking reel. For example, the side delivery rake may em ody a main tubular frame element as of generally U-shaped configuration "disposed with its bight portion forward and having caster wheels I suitably journaled at the ends of its arms.

As is more fully described in the above referred to co-pending Richey application, this type of of U-shaped frame in and mount pivot pins Hlb for respective connection to the lower links (not shown) of such conventional three-point hitch linkage. Additionally, a spaced pair of ears lilc are formed in the center of bight portion of U-shaped frame it for pivotal mounting of the tractor top link (not shown) thereto.

Laterally projecting arms l2 and I3 are welded to the medial portions of the arms of the U-shaped frame member Ill and these arms respectively journal the end discs Ma of a cylindroid type raking reel I 3. As is well known, in

Between the end discs i l-a, a, cylindrical cagelike strut of tooth bars l lo are mounted, every other bar having its ends respectively journaled in suitable bearings l lo provided on the end discs Ma. A plurality of raking teeth 14 are then mounted on each of the tooth bars [4b in a longitudinally spaced array. Additionally, a rotary stripper element It may be mounted on the frame it in adjacent parallelism to the raking reel It. All of the elements of the rake thus far briefly described are described in much greater detail in the above referred to co-pending Richey application.

In accordance with this invention, each of the end discs its is journaled on the frame arms [2 and 13 respectively by crank axles t6 and ii. As best shown in Figures 3 and 4, crank axle I! has likewise has a main bearing porlfia journaled in sleeve type bearing [9 welded to the top of an arm 9 disposed below arm i2 in depending relation thereto and parallel to arm 13. A crank portion itb of crank axle H3 is g The crank portion lib of crank axle I"! supports the right hand reel end disc hearing I tci. Cranks i6 and 1 are respectively provided with a pair of diametrically opposedlevers 16c and tie which are normally vertically disposed. The levers Mic and l 10 are preferably secured by welding to the main bearing portions of the cranks and closely adjacent the bearing sleeves i8 and I9 for a purpose to presently appear.

as will be more clearly brought out later.

Accordingly, when each of the crank axles the cylindroid reel Hi may rotate.

The axes of the bearing portions lea and Ila of cranks l6 and 11 are aligned with the longitudinal axis of the raking drum I4 which is an important feature of this invention and H occupy the same angular position relative to the axis of their body portions Ilia. and Na respectively, it is apparent that their crank portions Ito and 51b merely define stationary bearl ing members about which the end discs Ma of Such rotational movement of the reel Ht may be produced in any conventional manner, such as by a belt drive from a shaft 20 adapted to be secured to the tractor power-take-off and including a pulley 25 on the end of such shaft and a belt 22 which traverses a pulley groove integrally formed the one reel end disc Ma. The belt 22 may, if

desired, also provide driving power for the str ping reel it in the manner more fully described in the above referred to co-pending Richey application.

Referring particularly to Figure 3, when a concurrent adjustment is made in the angular posh 25 tion of the crank portions 15b and ill) of the crank axles i5 and ii respectively, the raking reel it will be tilted in a i'ore or aft direction depending on the direction of rotation of the crank axles and the effect will be to shift the angular position of the rake teeth l l with respect to the ground over which they pass.

This change in angular position is indicated by the dotted line construction in Figure 3.

This invention, therefore, provides a manually operable motion transmission linkage to eifect concurrent changes in the angular positions of the crank axles i5 and As best shown in Figure 1, such linkage may comprise an elongated shaft 2i extending generally parallel to one arm of the main frame It! and #10 supported thereon by a plurality of brackets ite. At its forward end, the shaft 2! terminates in a crank portion 2 is which is positioned closely adjacent the operators seat on the tractor (not shown) to which the rake is mounted. Sprockets 2th and 22c are respectively keyed to shaft 2i in appropriate positions to be aligned with the levers 96c and He which are respectively secured to the crank axles i6 and ii.

Chains 2H1 and its are employed to interconnect the sprockets 2th and Zic with the ends of levers i6c and lie respectively.

Hence, angular adjustment of the crank portion Zia will eifect a corresponding concurrent angular adjustment of the crank axles and 21.

However, it is necessary that the crank axles i8 and it be rigidly retained in any selected position of angular adjustment.

This function is conveniently accomplished by a cylindrical looking element Qif which is keyed to shaft 2! at a position axially adjacent to one of the supporting brackets ice.

Locking element 25f has a plurality of locking teeth iiig formed on its face which adjacent to the bracket [fie and a corresponding circular array of teeth lflf are pro- 5 vided on the bracket tile. element 2 if is shifted along the axis of shaft Thus when looking the teeth Zlg and iii will intermesh and effectively prevent any rotation of shaft 2i. A spr ing 2th is provided to resiliently maintain locking element 2i) in its locked position. Spring 2th operates between a collar 2M secured to shaft 2i and the other face of bracket tile.

From the foregoing description, it will be apparent that at any time the tractor operator sires to effect an adjustment of the pitch of the raking teeth relative to the ground being raked, he need only grasp the crank portion 2 la of shaft 2i, push such crank portion rearwardly a slight amount sufficient to disengage the teeth 2lg of the locking element from the teeth iii} of the locking abutment bracket We, and then rotate shaft 2| until the desired adjustment of crank axles it and H has been accomplished. When the tractor operator releases the crank portion 25a, the locking element 2i 1 will automatically re-engage the locking abutment me under the bias of spring Elli. and the crank axles l6 and H are effectively rigidly retained in their adjusted positions. Obviously, the described construction permits adjustment of the pitch of the raking teeth of the side delivery rake to be accomplished in an extremely simple, economical and convenient manner.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim:

1. In a side delivery rake having a frame and a cylindroid type raking reel having tooth bar mounting discs at each end, the improvements of a pair of crank axles respectively journaling said mounting discs in said frame, each of said crank axles having angularly displaced end portions respectively journaled to said discs and said frame, and means for concurrently angularly shifting said crank axles relative to said frame to thereby angularly shift the parallel axes of said end plates of said reel with respect to said frame.

2. The combination defined in claim 1 wherein said last mentioned means includes a manually rotatable shaft operatively connected to both of said crank axles, said shaft being axially shiftable through a limited range, a locking element on said shaft, a fixed abutment device disposed axially adjacent said locking element and resilient means axially urging said locking element into engagement with said abutment device.

3. In a side delivery rake having a frame and a cylindroid type raking reel having rake tooth bar mounting discs at each end adapted for rotation about spaced, parallel axes, the improvements comprising a pair of crank axles having main bearing portions and disc bearing portions, said disc bearing portions being angularly oifset relative to said mean bearing portions, means for respectively journaling the discs on the disc bearing portions of said crank axles, means for journaling said main bearing portions on the frame with their axes aligned with the longitudinal axis of the raking reel, and manually operable means for concurrently angularly shifting said crank axles whereby the tooth bar mounting discs are tilted in the direction of the longitudinal reel axis to vary the pitch of the teeth relative to the ground.

VERNON O. HAUSNIRTH.

References Cited in the file of this patent UNITED STATES PATENTS 

